外源水稻秸秆对土壤细菌群落结构的影响  

Effects of Exogenous Rice Straw on Soil Bacterial Community Structure

作　　者：韩哲 狄成乾 王敏 潘凯 HAN Zhe;DI Chengqian;WANG Min;PAN Kai(Institute of Agricultural Remote Sensing and Information,Heilongjiang Academy of Agricultural Sciences,Harbin,Heilongjiang 150086;College of Horticulture and Landscape,Northeast Agricultural University,Harbin,Heilongjiang 150030;Postdoctoral Programme,Heilongjiang Academy of Agricultural Sciences,Harbin,Heilongjiang 150086)

机构地区：[1]黑龙江省农业科学院农业遥感与信息研究所,黑龙江哈尔滨150086 [2]东北农业大学园艺园林学院,黑龙江哈尔滨150030 [3]黑龙江省农业科学院博士后工作站,黑龙江哈尔滨150086

出　　处：《北方园艺》2023年第12期74-83,共10页Northern Horticulture

基　　金：国家大宗蔬菜产业技术体系资助项目(CARS-23-B09)。

摘　　要：以连作大白菜土壤为试材,研究水稻秸秆添加对大白菜幼苗根肿病发生及土壤化学性质的影响,通过高通量测序技术研究土壤细菌群落结构的变化,以期为粮食作物秸秆在蔬菜生产中的应用提供参考依据。结果表明:水稻秸秆添加有效控制了大白菜幼苗根肿病的发生,降低了发病率、病情指数和发病根系占比;对土壤化学性质的研究表明,水稻秸秆添加一定程度提高了土壤pH、有机碳和碳氮比水平,并提高了碱解氮、有效磷和速效钾的含量;相关性分析发现,土壤pH、有机碳、碳氮比、碱解氮、有效磷和速效钾显著影响土壤细菌群落分布,方差分解分析结果表明土壤有机碳对土壤细菌群落结构影响较大。The soil of continuous cropping of Chinese cabbage was taken as the research background in this study.The clubroot occurrence of Chinese cabbage seedlings and soil chemical properties,and the change of soil bacterial community structure was studied by high-throughput sequencing technology,in order to provide reference for the grain crop straws utilization in vegetalde cropping.The results showed that the addition of rice straw effectively controlled the occurrence of clubroot disease in Chinese cabbage seedlings,reduced the incidence rate,disease index and the proportion of the disease root system.The results of soil chemical properties showed that the addition of rice straw increased the level of pH,organic carbon and carbon nitrogen ratio,and increased the content of available nitrogen,available phosphorus and available potassium.Correlation analysis found that soil bacterial community distribution was significantly affected by soil pH,organic carbon,carbon nitrogen ratio,available nitrogen,available phosphorus and available potassium.Variance decomposition analysis showed that soil organic carbon had a great impact on soil bacterial community structure.

关 键 词：水稻秸秆 连作大白菜 根肿病 土壤细菌群落 土壤化学性质 

分 类 号：S154.1[农业科学—土壤学]